Oracle Audio Technologies E10898-02 manual Xen Technology, Oracle VM

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Xen™ Technology

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administration costs, fewer computers can be used to achieve the same goal. Administration and physical setup is less time consuming and costly.

Isolation: Virtual machines run in sand-boxed environments. They cannot access each other, so if one virtual machine performs poorly, or crashes, it does not affect any other virtual machine.

Platform Uniformity: In a virtualized environment, a broad, heterogeneous array of hardware components is distilled into a uniform set of virtual devices presented to each guest operating system. This reduces the impact across the IT organization: from support, to documentation, to tools engineering.

Legacy Support: With traditional bare-metal operating system installations, when the hardware vendor replaces a component of a system, the operating system vendor is required to make a corresponding change to enable the new hardware (for example, an ethernet card). As an operating system ages, the operating system vendor may no longer provide hardware enabling updates. In a virtualized operating system, the hardware remains constant for as long as the virtual environment is in place, regardless of any changes occurring in the real hardware, including full replacement.

1.3 Xen™ Technology

The Xen hypervisor is a small, lightweight, software virtual machine monitor, for

x86-compatible computers. The Xen hypervisor securely executes multiple virtual machines on one physical system. Each virtual machine has its own guest operating system with almost native performance. The Xen hypervisor was originally created by researchers at Cambridge University, and derived from work done on the Linux kernel.

The Xen hypervisor has been improved and included with Oracle VM Server.

1.4 Oracle VM

Oracle VM is a platform that provides a fully equipped environment for better leveraging the benefits of virtualization technology. Oracle VM enables you to deploy operating systems and application software within a supported virtualization environment. The components of Oracle VM are:

■Oracle VM Manager: Provides the user interface, which is a standard ADF (Application Development Framework) web application, to manage Oracle VM Servers, virtual machines, and resources. Use Oracle VM Manager to:

–Create virtual machines from installation media or from a virtual machine template

–Delete virtual machines

–Power off virtual machines

–Upload virtual machines

–Deploy virtual machines

–Perform live migration of virtual machines

–Import and manage ISOs

–Create and manage virtual machine templates

–Create and manage sharable hard disks

1-2Oracle VM Server User’s Guide

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Contents E10898-02 FebruaryPage Contents Command-Line Tools Oracle VM Server Configuration File Page Accessibility of Code Examples in Documentation PrefaceCommand Syntax TTY Access to Oracle Support ServicesConventions Page What is Virtualization? Why Virtualize?Introduction to Virtualization Xen Technology Oracle VMXen Technology Oracle VM Oracle VM Architecture shows the components of Oracle VM4Oracle VM Server User’s Guide Oracle VM Server Oracle VM ServerHypervisor Domains, Guests and Virtual MachinesHypervisor Management Domain DomainsHardware Virtualization Vs. Paravirtualization Creating Virtual MachinesConfiguring Oracle VM Server Configuring Oracle VM ServerManaging Oracle VM Server Repositories Oracle VM Agent Command-Line Tool Configuring Oracle VM AgentOracle VM Agent Configuring Oracle VM Agent XmlrpcStarting Oracle VM Agent Stopping Oracle VM AgentMonitoring Oracle VM Agent Deploying Oracle VM AgentTesting the Oracle VM Agent Connection Remotely Starting a Guest with the Oracle VM Agent APIOracle VM Agent Utilities Remotely Stopping a Guest with the Oracle VM Agent APIMonitoring a Guest with the Oracle VM Agent Deleting a Guest with the Oracle VM Agent6Oracle VM Server User’s Guide Creating a Guest Supported Guest Operating SystemsSupported Guest Operating Systems -bit Hypervisor Supported Guest Operating SystemsCreating a Guest Using a Template Creating a Guest Using a TemplateMounting an ISO Enabling Registration of Guests with Oracle VM ManagerCreating a Guest Using virt-install Creating a Guest Using virt-installPress Enter Following question is displayed Would you like to enable graphics support yes or no? Creating a Paravirtualized Guest Manually Creating the Root File SystemCreating a Paravirtualized Guest Manually Configuring the Guest Populating the Root File SystemCreating a Hardware Virtualized Guest Manually Creating a Hardware Virtualized Guest ManuallyEdit /mnt/etc/sysconfig/network-scripts/ifcfg-eth0 Use VNCViewer to display the guest If you see this error message Restart the guest, using the xm command-line tool Installing Paravirtual Drivers Installing Paravirtual Drivers 16Oracle VM Server User’s Guide Domain Monitoring and Administration Using the xm Command-Line InterfaceDomain Lifecycle Using the xm Command-Line Interface Monitoring DomainsViewing Host Information Using the xm Command-Line Interface 4Oracle VM Server User’s Guide Creating a Shared Virtual Disk Using OCFS2 on iSCSI Domain Live MigrationCreating a Shared Virtual Disk for Live Migration Creating a Shared Virtual Disk for Live Migration Delete entries that you do not want to use, for exampleCreating a Shared Virtual Disk Using OCFS2 on SAN Adding a Shared Virtual Disk Using NFS Migrating a Domain Migrating a Domain6Oracle VM Server User’s Guide Repository Configuration File Managing Oracle VM Server RepositoriesOracle VM Server Repositories Repository Mount OptionsAdding a Repository Removing a RepositoryOracle VM Server Repositories Command-Line Tools Configure StartStop RestartHelp Nname --name=nameRRAM --ram=RAM UUUID --uuid=UUIDBvalue --bridge=value VncVncport=port SdlOs-variant=variant NoapicArch=arch Paravirt Llocation --location=locationVif-type=type Xargs --extra-args=argsConsole domain-id Destroy domain-idDmesg --clear Help --long option=file --defconfig=file List --long --label domain-idLog Migrate domain-id host -l --live -r=MB --resource=MBRestore statefile Shutdown -a -w domain-idTop Unpause domain-idOracle VM Server Configuration File Oracle VM Server Configuration File Loglevel Critical or Fatal Error Warn or Warning Info DebugLogfile location Xend-http-server yes no Xend-unix-server yes noXend-tcp-xmlrpc-server yes no Xend-unix-xmlrpc-server yes noXend-port port Xend-relocation-port portXend-address IPAddress Xend-relocation-address IPAddressEnable-dump yes no Dom0-min-mem memoryDom0-cpus CPUs External-migration-tool tool6Oracle VM Server User’s Guide Guest Configuration Files Configuration File ExampleConfiguration File Example Oracle VM Agent Architecture Oracle VM Agent ArchitectureOracle VM Agent Deployment Oracle VM Agent DeploymentOracle VM Agent Architecture D-3 4Oracle VM Server User’s Guide Troubleshooting Debugging ToolsOracle VM Server Directories Using Dhcp Guest Console AccessOracle VM Server Command-Line Tools Using DhcpGuest Console Access Cannot Display Graphical Installer When Creating Guests Cannot Display Graphical Installer When Creating GuestsHardware Virtualized Guest Console Not Displayed Setting the Guest’s Clock Wallclock Time Skew ProblemsMouse Pointer Tracking Problems Mouse Pointer Tracking ProblemsHardware Virtualized Guest Windows Installation Hardware Virtualized Guest KilledHardware Virtualized Guest Devices Not Working as Expected Hardware Virtualized Guest KilledFirewall Blocks NFS Access Attaching to a Console with the Grub Boot LoaderTAP Disks with Paravirtualized Guests CD-ROM Image Not Found8Oracle VM Server User’s Guide Glossary Oracle VM Agent Oracle VM ServerOracle VM Manager Paravirtualized machineUtility Server VifVirtual disk Virtual Machine VMGlossary-4 Index Index-1Index-2
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